i'm guessing it's a carrier/coverage problem. i've never had double messages with my lumia 920 or any other device i've had on at&t, however, i regularly had issues (as did my wife and most of my friends) with VZW devices.

i'm guessing it's a carrier/coverage problem. i've never had double messages with my lumia 920 or any other device i've had on at&t, however, i regularly had issues (as did my wife and most of my friends) with VZW devices.

Good call. I do remember having this issue a few years ago with Verizon. It was what you said: poor coverage led to double text messages.

I've seen the issue on both my 900 & now my 920... It's only every once in a while, but I think it is more of a carrier issue...

Just so happened, a text to a friend (not something they wanted to hear) went through 2x and said friend replied snidely that that they got the text the first time. Anyhow, went round with him asking how often he gets 2x texts from me and he said not very often... Grilled him a little more and he said he sometimes gets double texts from everyone, be it android, WP or other... Only people he doesn't get 2x from are other iPhone users, I assume because ios to ios uses imessage instead of actual SMS.

My wife just commented that her phone (iPhone 4s) was occasionally receiving my messages twice since I've switched to the Lumia 920, however I also think that this is carrier-related and SMS. I have a friend on Sprint using an Android phone and I frequently receive double message from her.

I have the EXACT same sim card which I had in my Galaxy Nexus and never had this issue until trimming it down and putting it in the 920
I often get the failed message when the phone is connected to WiFi as well as data.

It's not limited to the 920/wp8. I text a lot with someone on a 900 and we both receive duplicate messages on occasion. I used to get dropped messages on Verizon.... I'll take the problem of duplicates over dropped messages any day of the week!

Then forgive me for being Naive then it has to be a Windows Phone bug. I didn't have this issue on WebOS or Android with the same sim card. Coverage hasn't changed in my area and I'm on the same network. Literally the only thing thats changed for me is the phone :/

I didn't have this issue on my Lumia 900. I currently use the same SIM card, with the same plan, in the same locations, using my Lumia 920. I'm told constantly that my messages are sending twice. I suspect there really is something not quite working perfectly in Windows Phone 8.

Got this issue on HTC 8S. On UK Orange network. Two other phones in house (1 Android and 1 old Nokia) on same network don't do it. According to network activity log multiple messages are sent. Feels like shorter the message, the more repeats. Often 5 duplicates. Once had as many as 8. Texting another number stops it - but can send multiple copies to that instead.

Definitely appears to be associated with Windows Phone 8 - even if network conditions can influence the occurance.